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Allen-Bradley 1746-P4 SLC 500

The Allen-Bradley 1746-P4 is an SLC 500 modular chassis power supply: 120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC. NJT Automation sources the 1746-P4 on request; send the part number for a replacement or repair quote.

Quote required. Request a quote below for pricing and delivery.

Allen-Bradley 1746-P4 SLC 500 chassis power supply – front view
Request Replacement QuoteRequest Repair Quote
Price
On Request
Availability and condition determine final quote.
DescriptionSLC 500 chassis power supply.
ShippingUPS Ground included | Next-Day Air and Worldwide Shipping available at checkout
Warranty1-year full-function warranty provided by NJT Automation.
Warranty details

The original Allen-Bradley warranty does not apply to pre-owned units. Full warranty coverage is provided directly by NJT Automation. If you have any issues we can usually swap your unit next-day air (based on inventory)-no waiting weeks for a repair.

Included: 1 Year
+1 Year: +15% of product price
+2 Years: +25% of product price
View Full Warranty Policy
Returns90-day free returns on all purchases.View return policy
Exchange

We will purchase your old or damaged parts.

Availability
Available Level 1

This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options.

Inventory Level 1 RFQ

Level 1 inventory is available within our supplier network. We confirm prices, quantities, and next-day shipping options with the quote. We've built relationships with trusted suppliers across the United States and carefully screen out vendors that sell counterfeits, low-quality used equipment, or repackaged items marketed as new. We specialize in hard-to-find Allen Bradley components, offering top-quality replacement parts at a reasonable price, backed by reliable service and warranty.

Request QuoteLearn more about Inventory Levels
Repairs

1746-P4 Mail-In Repair Service

How the Process Works:

  1. Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
  2. Receive a Quote: We respond ASAP - within 1 hour during business hours.
  3. Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
  4. Direct Shipping: Our normal shipping time is 3-5 business days, during which we thoroughly inspect and certify items to meet our high standards. If you request next-day air delivery, the item will be sent directly to you and arrive the following business day. Please note: These items are NOT available for local pickup at NJT Automation's location.

What We Offer

We source genuine parts from trusted U.S. channels and stand behind what we sell.
  • Our network has millions of parts ready to be delivered now.
  • Complete Transparency: Clear information on item availability.
  • Well-vetted components from trusted suppliers sourced from the USA.
  • Technical Support: Assistance, troubleshooting and hardware repairs.
  • Minimal Markup: The best sourcing service at a minimal cost.
  • Quick Delivery: Fast access to the parts you need to get your machines back up and running.
  • Dropship available • No branding on packaging

Part Number Decoder

SLC 500 chassis power supply
1746P4

SLC 500 modular chassis power supply: 120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC.

1746
BulletinSLC 500 I/O bulletin: chassis, power supplies and I/O modules for the SLC 500 modular system (processors are bulletin 1747).
P
Product typeChassis power supply: mounts on the left end of a 1746 chassis.
4
Rating120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Allen Bradley Information

Technical Description
Allen Bradley SLC 500 Power Supply 1746-P4, 24V DC input, 5V DC and 24V DC output, 4A and 0.96A respectively
Lifecycle: Active — verify current status with the manufacturer

Alternate Part Numbers

1746P4
CategorySLC 500
Part Number1746-P4
ManufacturerAllen-Bradley

Can the 1746-P4 be repaired?

Yes. NJT Automation offers mail-in repair for the 1746-P4, including diagnostic evaluation, component-level repair, and functional testing.

NJT Managed Repair

One vendor. One warranty. NJT manages the entire process.

  • 1-year full-function NJT warranty, with 2- and 3-year options available
  • Rush service available for production-critical repairs
  • No evaluation or diagnostic charges
  • No repair, no charge
  • Pre-paid UPS shipping label provided for sending your unit in
  • $650 minimum repair charge, shipping included both ways
Get an NJT Repair Quote

Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.

Find a PLC repair specialiston RepairMode.com ↗

Common 1746-P4 failures

Failure patterns we regularly see on SLC 500 chassis power supply hardware like the 1746-P4:

  • Dead chassis: no backplane power after an input surge or failed input section
  • Rack resets or processor faults from aged capacitors and output ripple
  • Output sag under a full rack load, especially on P1 supplies in large chassis
  • Blown input fuse after a wiring or lightning event
  • POWER LED flickering or off with input present

Why Choose Our Repair Service?

  • ■ Rush turnaround available, with 24-hour emergency service on some models
  • ■ 1-year full-function warranty, with 2- and 3-year extended options
  • ■ No evaluation or diagnostic charges
  • ■ Free UPS shipping label available
  • ■ "Unrepairable" is not an option
  • ■ Thousands of successful Allen-Bradley restorations

Request a Repair Quote

Ready to repair your 1746-P4? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of the symptoms to (414) 331-5954.

Start Your Repair Today

Still have questions?

Find answers to shipping, warranties, repairs, and more.

The Allen-Bradley 1746-P4 is an SLC 500 modular chassis power supply: 120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC.
The 1746-P4 is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.
This 1746-P4 is sourced on request, so sourcing and quote timelines apply. Request a quote and we'll confirm availability and lead time. Many parts can be sourced within a few business days through our Level 1 supplier network.
Yes. UPS Next Day Air is available at checkout for the 1746-P4. Place your order before 5:00 PM Central on a business day and your in-stock item ships the same day for next-business-day delivery.
Yes. Once your 1746-P4 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.
120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC.
1746-P4 breaks down as: 1746 = SLC 500 I/O bulletin; P = Chassis power supply; 4 = 120/240V AC input, 10 A at 5V DC / 2.88 A at 24V DC.
NJT Automation

NJTAutomation

Industrial Electronics

Supply & Repair, Milwaukee WI

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Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

Firmware & Software Licensing

Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

NJT Automation does not provide, obtain, transfer, or license firmware on behalf of customers. We make no representation regarding your ability or legal right to obtain, download, install, or use firmware from the OEM, its authorized distributors, or any other source. It is the customer's sole responsibility to ensure compliance with all applicable End User License Agreements (EULAs), software licenses, intellectual property rights, and other terms governing the acquisition, installation, and use of firmware.

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